Deck 2: The Chemists Toolbox

Question 1

If 15.0 mL of a metal has a mass of 103.0 g, what is the density of the metal?

A)6.87 g\mL
B)1550 g\ mL
C)0.146 g\mL
D)1.46 g\mL
E)None of these.

Answer 1

6.87 g\mL

Question 2

The density of gold is 19.3 g\mL. If the current price of gold is $56.75 per gram, what is the volume of a nugget of gold worth $150.00?

A)1.15 mL
B)0.868 mL
C)1.72 mL
D)1.27 mL
E)0.137 mL

Answer 2

0.137 mL

Question 3

Which of these represents the SI prefix for mega (M)?

A)10⁹
B)10⁶
C)10³
D)10 ^{− 2}
E)10 ^{− 6}

Answer 3

10⁶

Question 4

How many significant figures are there in the number 10,100?

A)1
B)3
C)4
D)5

Question 5

Calculate the density with the correct number of significant figures of a 50.0 g sample of mercury with a volume of 3.66 mL.

A)13.66 g\mL
B)13.7 mL
C)183 g\mL
D)0.0732 g\mL
E)0.073 g\mL

Question 6

Calculate the density to the correct number of significant figures of a 100.0 g sample of mercury which occupies a volume of 7.36 cm³.

A)13.58 g\cm³
B)13.66 g\cm³
C)183 g\cm³
D)0.0732 g\cm³
E)0.073 g\cm³

Question 7

The diameter of the nucleus of an atom is approximately 1 × 10 ^{− 13} meters. If 1 nm is equal to 10 Angstroms, what is the diameter of the nucleus in Angstroms? (1 nm = 1 x 10 ^{− 9} meter)

A)1 × 10 ^{− 21} A
B)1 × 10 ^{− 6} A
C)1 × 10 ^{− 5} A
D)1 × 10 ^{− 4} A
E)1 × 10 ^{− 3} A

Question 8

Determine the volume occupied by 1.5 g of ethyl alcohol. The density of ethyl alcohol is 0.789 g\mL.

A)1.9 mL
B)1.3 mL
C)0.53 mL
D)0.526 mL
E)1.331 mL

Question 9

Which of these represents the SI prefix for centi (c)?

A)10 ^{− 6}
B)10 ^{− 3}
C)10 ^{− 1}
D)10 ^{− 2}
E)10⁶

Question 10

Chloroform is a commonly used anesthetic with a density of 1.483 g\mL. Determine the volume of chloroform needed to deliver a 9.37 g sample of the anesthetic.

A)0.158 g
B)6.32 g
C)13.9 g
D)13.89 g
E)0.0632 g

Question 11

When adding and subtracting, the number of significant figures in the answer is determined by _____.

A)the most precise number
B)the least precise number
C)the number with the most significant figures in the calculation
D)the number with the fewest significant figures in the calculation

Question 12

Which of these represents the SI prefix for micro ( μ )?

A)10 ^{− 6}
B)10 ^{− 3}
C)10 ^{− 9}
D)10 ^{− 2}
E)10⁶

Question 13

When multiplying and dividing, the number of significant figures in the answer is determined by _____.

A)the most precise number
B)the least precise number
C)the number with the most significant figures in the calculation
D)the number with the fewest significant figures in the calculation

Question 14

Which is the standard SI unit for mass?

A)Gram
B)Pound
C)Ounce
D)Kilogram
E)Ton

Question 15

Which is the correct SI unit for time?

A)Meter
B)Hour
C)Second
D)Minute
E)Gram

Question 16

Determine the mass in grams of a gold sample which occupies a volume of 16.39 mL? Gold has a density of 19.3 g\mL.

A)0.118 g
B)0.316 g
C)0.849 g
D)1.18 g
E)316 g

Question 17

Convert 89.5 meters to millimeters.

A)8.95 × 10⁴ mm
B)8.95 × 10 ^{− 4} mm
C)8.95 × 10² mm
D)8.95 × 10 ^{− 2} mm
E)None of these.

Question 18

Which of the following is not true?

A)1 cm = .01 m
B)100 cm = 1 m
C)1 cm = 100m
D).01 cm = .0001m
E)10000 cm = 100 m

Question 19

Which is the standard SI unit for length?

A)Meter
B)Feet
C)Mile
D)Kilometer
E)Centimeter

Question 20

How many significant figures are there in the number 10.00?

A)1
B)2
C)3
D)4

Question 21

Solve the problem.
(5.46 × 10⁷ + 3.13 × 10⁶)× (7.65 × 10⁵)

A)65.7 × 10¹⁸
B)130.7 × 10¹⁸
C)4.42 × 10¹³
D)2.39 × 10¹²
E)65.7 × 10⁸

Question 22

1.00 in³ equals ________.

A)2.54 cm³
B)7.62 cm³
C)16.38 cm³
D).394 cm³

Question 23

Given that 1 in = 2.54 cm, which of the following is true?

A)1 in² = 2.54 cm²
B)1 in² = 5.08 cm²
C)1 in² = 6.45 cm²
D)1 in² = 1.27 cm²
E)None of these.

Question 24

One m³ equals ____________.

A)1000 mm³
B)1,000,000 mm³
C)1,000,000,000 mm³
D)1,000,000,000,000 mm³

Question 25

Solve the problem.
(3.21 × 10¹⁰ − 3.13 × 10¹²)÷ (7.65 × 10⁵)

A)4.13 × 10⁶
B)2.37 × 10¹⁸
C)65.7 × 10¹⁸
D)− 23.7 × 10¹⁷
E)− 4.04 × 10⁶

Question 26

Most races are now measured in kilometers. What is the distance in miles a runner must complete in a 10 kilometer run. (1 km = 0.62137 mile)

A)3.1 miles
B)6.2 miles
C)16.1 miles
D)32.2 miles
E)62.137

Question 27

Solve the problem.
3.728 + 6.272

A)10
B)10.0
C)10.00
D)10.000
E)10.0000

Question 28

Which of these numbers has the most significant figures?

A)0.5071
B)0.201
C)6.02 × 10²³
D)51
E)103

Question 29

Convert 10.5 mm\s to ft\hr.

A)124 ft\hr
B)9.57 × 10 ^{− 6} ft\hr
C).0344 ft\hr
D)37800 ft\hr
E)None of these.

Question 30

0.01% is equivalent to which of the following?

A)100 ppm
B)100 ppb
C)0.000001 ppm
D)0.000001 ppb
E)None of these.

Question 31

Solve the problem.
​
(12.67 × 4.23)÷ 23.42

A)2.3587
B)2. 6334
C)2. 2289
D)2. 8800
E)2. 2884

Question 32

A football field is 100 yards long. What is its length in centimeters? (1 yd = 0.9144 m)

A)0.09144 cm
B)91.44 cm
C)274.32 cm
D)334 cm
E)9.144 × 10³ cm

Question 33

How many kilograms of calcium are there in a 173 pounds of calcium? (1 pound = 454 grams)

A)1.1 kg
B)78.54 kg
C)1.1 × 10² kg
D)3.8 × 10⁴ kg
E)7.85 × 10⁴ kg

Question 34

Solve the problem.
3.72 × 10⁸ × 9.26 × 10 ^{− 3}

A)3.44 × 10⁶
B)4.02 × 10¹⁰
C)3.45 × 10⁵
D)3.44 × 10 ^{− 4}
E)4.02 × 10 ^{− 10}

Question 35

Convert 2.50 × 10⁴. meters to miles ( 1 mile = 5280 feet).

A)76.2 miles
B)6.35 miles
C)15.5 miles
D)155 miles
E)186 miles

Question 36

Solve the problem.
1.5 × 10³ + 3.14 × 10⁴ − 1.21 × 10² = ?

A)3.28 × 10⁴
B)3.30 × 10³
C)3.3 × 10 ^{− 4}
D)3.30 × 10⁵
E)3.43 × 10⁹

Question 37

The long jump record is 8.90 m. What is the length in yards? (1 yd = 0.9144 m)

A)9.73 yards
B)293 yards
C)350 yards
D)4204 yards
E)5000 yards

Question 38

A football field is 100.0 yards long. What is its length in meters? (1 yd = 0.9144 m)

A)0.09144 m
B)91.44 m
C)274.32 m
D)334 m
E)9.144 × 10³ m

Question 39

The long jump record is 8.90 m. What is the length in inches? (1 m = 39.37 inches)

A)9.73 inches
B)293 inches
C)350 inches
D)4204 inches
E)5000 inches

Question 40

One milliliter is equal to ___________.

A)2.54 cubic inches
B)1000 liters
C)1 cubic centimeter
D)16.39 cubic inches

Question 41

Which of these is incorrectly matched?

A)centi c 10 ^{− 2}
B)mega M 10⁶
C)milli m 10 ^{− 3}
D)nano n 10⁹
E)micro μ 10 ^{− 6}

Question 42

Solve the problem.
131.7 × 1.05

A)1.38 × 10³
B)1.38 × 10²
C)1.3 × 10³
D)1.30 × 10³
E)1.3 × 10 ^{− 3}

Question 43

Which of these series correctly orders the values given from smallest to largest?

A)I < II < III < IV
B)II < I < IV < III
C)I < II = III < IV
D)I < IV < III < II
E)I < III < IV < II

Question 44

Because of the high heat and humidity in the summer in Death Valley, California, a hiker requires about 1 quart of water for every two miles traveled on foot. If the density of water is 0.999 g\mL at 45^oC , how many kilograms of water are required for a person to walk 30 kilometers in Death Valley? (1 L = 1.0567 qt; 1 km = 0.62317 mi)

A)8.8 kg
B)70 kg
C)350 kg
D)700 kg
E)8.8 × 10³ kg

Question 45

Which of these numbers has the four significant figures?

A)0.3211
B)0.201
C)6.02 × 10²³
D)5100
E)0.0103

Question 46

A sample of molten iron occupies of a volume of 7.11 × 10 ^{− 3} L. If the density of iron is 7.86 g\cm³, what is the mass of iron in grams in the sample?

A)0.000904 g
B)0.0559 g
C)0.904 g
D)1.105 g
E)55.8846 g

Question 47

Which of these is the correct normal notation for 7.77 × 10⁷?

A)0.000000777
B)0.0777
C)7,770
D)7,770,000
E)77,700,000

Question 48

Figure 2-1
Refer to Figure 2-1. Which of these statements is true based on the data provided by the graph?

A)The pH of the solution must be determined algebraically.
B)The pH of the solution is relatively unaffected by the addition of base.
C)The pH of the solution is 7 when approximately 12 mL of base have been added.
D)The pH of the solution is relatively constant with addition of the first 14 mL of base.
E)The pH of the solution rises significantly when the volume is increased from 14 mL to 18 mL.

Question 49

Which of these is the correct scientific notation for 6,000,220?

A)6.022 × 10⁵
B)6.00022 × 10⁵
C)6.00022 × 10⁶
D)6.00022 × 10 ^{− 5}
E)6.00022 × 10 ^{− 6}

Question 50

An irregular shaped piece of metal with a mass of 105 g was placed in a graduated cylinder that contained 25.00 mL of water. This raised the water level to 45.35 mL. What is the density of the metal?

A)0.238 g\mL
B)2.3 g\mL
C)4.2 g\mL
D)5.16 g\mL
E)20.35 g\mL

Question 51

Figure 2-1
Refer to Figure 2-1. What is the pH of the solution after 8 mL of base have been added.

A)3
B)4
C)6
D)7
E)8

Question 52

Convert 4.5 inches to meters . (2.54 cm = 1 inch)

A)0.1143 m
B)1.77 m
C)11.43 m
D)0.0177 m
E)1143 m

Question 53

Determine the volume in liters of a 1.00 ounce bottle.(1.06 qt = 1 L; 32 ounces = 1 qt)

A)0.0295 L
B)0.03125 L
C)0.03313 L
D)30.2 L
E)33.9 L

Question 54

An irregular shaped piece of metal with a mass of 220 g was placed in a graduated cylinder that contained 35.00 mL of water. This raised the water level to 52.50 mL. What is the density of the metal?

A)0.285 g\mL
B)4.19 g\mL
C)17.5 g\mL
D)12.6 g\mL
E)38.5 g\mL

Question 55

Figure 2-1
Refer to Figure 2-1. What affect was there on the pH of the solution when the volume of base added was increased from 8 mL to 13 mL?

A)The pH dropped by a value of 4.
B)The pH increased by a value of 4.
C)The pH remained relatively unchanged.
D)The pH increased by a value of 10.
E)The pH increased by a value of 20.

Question 56

Which of these is the correct normal decimal notation for 5.23 × 10 ^{− 4}?

A)0.0523
B)0.00523
C)0.0000523
D)0.000523
E)52,300

Question 57

Which of these series correctly orders the values given from smallest to largest?

A)III < II < II < IV
B)II < I < IV < III
C)II < I = IV < III
D)I < IV = III < II
E)I < III < IV < II

Question 58

Solve the problem.
33.5 ÷ 3.011

A)1.11 × 10¹
B)1.11 × 10³
C)1.113 × 10¹
D)1.11 × 10²
E)1.112587 × 10¹

Question 59

Which of these is the correct normal notation for 8.14 × 10⁵?

A)0.0000814
B)0.000814
C)81.400
D)814,000
E)81,400,000

Question 60

Which of the following is correctly written in scientific notation?

A)50.0 × 10⁶
B)4.02 × 10²¹⁶
C)1 × 10 ^{− 6.8}
D)1.005 × 10 ^{− 9.05}
E)10 ^{− 5}

Question 61

A 5 foot 7 inch track athlete weighs 110 pounds. What is her height in cm and her weight in kilograms? (2.54 cm = 1 inch; 454 g = 1 pound)

A)14.5 cm 242 kg
B)152 cm 49.9 kg
C)170 cm 49.9 kg
D)154 cm 242 kg
E)152 cm 4.99 × 10⁴ kg

Question 62

Solve the following equation for z.
4z ÷ 2z + 3 = 30

A)2
B)6.25
C)10
D)11
E)13.5

Question 63

Solve the following equation for z.
2(z + 6)− 10 = 42

A)6
B)10
C)12
D)20
E)40

Question 64

Which of these samples of water will have the greatest mass? (Density of water = 1.00 g\cm³; 454 g = 1 pound)

A)10,000 g
B)25 pounds
C)1 kg
D)5 × 10 ^{− 2} L
E)2,000 mL

Question 65

Solve the following equation for y.
​
3y + 24 = 6y − 3

A)3
B)6
C)9
D)8
E)12

Question 66

Solve the following equation for x: 13x = x + 156

A)13
B)20
C)1
D)7
E)12

Question 67

An international group of zookeepers with successful breeding programs made the following animal exchanges last year. Using the same bartering system, how many monkeys can a zoo obtain in exchange for 15 flamingos?

A)3 monkeys
B)5 monkeys
C)8 monkeys
D)12 monkeys
E)15 monkeys

Question 68

Chemical waste is often shipped in 55-gallon drums. What is the weight in pounds of a 55-gallon drum if the density of the waste is 1.5942 g\cm³? (454 g = 1 pound; 0.9463 L = 1 quart; 4 quarts = 1 gallon)

A)130 lbs
B)731 lbs
C)810 lbs
D)4.5 × 10⁴ lbs
E)5.9 × 10⁴ lbs

Question 69

A regulation soccer field is 110.0 yards in length. Calculate the length in millimeters. (1.094 yards = 1 m)

A)0.101 mm
B)1.01 mm
C)100.5 mm
D)1.01 × 10⁴ mm
E)1.01 × 10⁵ mm

Question 70

Which of these samples of aluminum will occupy the greatest volume? (Density of aluminum = 2.70 g\cm³; 454 g = 1 pound)

A)10,000 g
B)25 pounds
C)1 kg
D)5 × 10 ^{− 2} L
E)2,000 mL

Question 71

What is the mass in kilograms of a 25.00 pound dumbbell? (454 g = 1 pound)

A)1.377 × 10 ^{− 3} kg
B)1.377 kg
C)11.35 kg
D)1.377 × 10³ kg
E)1.135 × 10⁷ kg

Question 72

Solve the following equation for y.
3y = 24

A)3
B)6
C)7
D)8
E)12

Question 73

Solve the problem.
5.6 × 10² × 7.41 × 10³ = ?

A)232 × 10¹
B)7.55 × 10⁵
C)2.32 × 10⁵
D)4.1 × 10⁶
E)232 × 10⁵